2312023113221 has 4 divisors (see below), whose sum is σ = 2338000901100. Its totient is φ = 2286045325344.

The previous prime is 2312023113167. The next prime is 2312023113227. The reversal of 2312023113221 is 1223113202132.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 762032973025 + 1549990140196 = 872945^2 + 1244986^2 .

It is a cyclic number.

It is not a de Polignac number, because 2312023113221 - 2²² = 2312018918917 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2312023113227) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12988893806 + ... + 12988893983.

It is an arithmetic number, because the mean of its divisors is an integer number (584500225275).

Almost surely, 2^{2312023113221} is an apocalyptic number.

It is an amenable number.

2312023113221 is a deficient number, since it is larger than the sum of its proper divisors (25977787879).

2312023113221 is an equidigital number, since it uses as much as digits as its factorization.

2312023113221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25977787878.

The product of its (nonzero) digits is 864, while the sum is 23.

Adding to 2312023113221 its reverse (1223113202132), we get a palindrome (3535136315353).

The spelling of 2312023113221 in words is "two trillion, three hundred twelve billion, twenty-three million, one hundred thirteen thousand, two hundred twenty-one".